I think its A but I'm not sure.
The scientific method uses observation, making a hypothesis and experimentation process to answer questions. The scientific method is a procedure that is used for investigating, acquiring new knowledge and/or correcting a known knowledge. Hope this answers the question. Have a nice day.
Answer:
As seen in the question above, "constraint" is a word that indicates a limitation or condition. In this case, we can say that the "restriction" is an imposition to a limit under a given situation, and it can also mean an imposition of the free execution of an activity, skill and even limitation and a conditioning factor to a certain freedom.
Transport proteins aid the movement of these substances into and out of the cell. One way that a cell maintains homeostasis is by controlling the movement of substances across the cell membrane. The lipid bilayer is selectively permeable to small, nonpolar substances.
Melissa should mind her peak flow rate! She should be gaging her reactions based on that information and referring to her Asthma Action Plan. In relation to changes to her lifestyle, she will have to establish a routine sleeping schedule, and perhaps abstain from certain strenuous activities, like ballet class. If she doesn't follow the plan, she will suffer from numerous severe asthma crises due to exposure to and causation of triggers. If Melissa does not adhere to her Asthma Action Plan, it could lead to fatal repercussions.